Levitskiy A.G.
Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Krutoy A.N.
The Russian State University of Justice, St. Petersburg

Matveev D.A.
Saint Petersburg State University, St. Petersburg

Berekenov A.Zh.
Admiral Makarov State University of Maritime and Inland Shipping, St. Petersburg

Objective of the study was to establish the features of the twisting of the force field in which the movement of the athletes' center of gravity occurs when moving in the «shuttle» manner.
Methods and structure of the study. It is assumed that the athletes center of gravity moves in the force field , created by the athlete and gravity. The study was conducted using the «shuttle» method of movement. The demonstration of movement was performed by two athletes with the qualification of master of sports in jiu-jitsu.
Results and conclusions. The rotor of the force field, in which the athlete's center of gravity moves during the shuttle movement, is not stationary in time. For different athletes, the change in the rotor from the coordinate can be either the same or the opposite. Therefore, we can talk about a variety of values ​​of biomechanical parameters and characteristics corresponding to the correct technique, and we can also talk about several options for the correct technique for performing movement. A technical error will be understood as an action that makes it impossible to perform a subsequent motor task or that entails an unjustified expenditure of energy.

Keywords: biomechanics of martial arts, jiu-jitsu, shuttle movement.

References

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